Washington and the world are still reeling from President Joe Biden’s surprise announcement on Sunday that he is ending his teetering re-election campaign.

But Biden’s swift endorsement of Vice President Kamala Harris to replace him at the top of the Democratic ticket is energizing Democrats and breathing new life into their campaign to defeat former President Donald Trump and his running mate, Ohio Sen. JD Vance.

The “Biden for President” campaign committee has officially been renamed the Harris for President committee, maintaining the Biden team’s infrastructure, staff and — crucially — its $98 million in cash reserves.

Democrats excited about a new ticket have donated tens of millions of dollars online to the Harris for President campaign.

Now, speculation swirls about who the former California senator could choose for a potential running mate, if she becomes the party’s nominee. Several Democratic governors are early favorites, with strategists eyeing Josh Shapiro of Pennsylvania, Roy Cooper of North Carolina and Kentucky Gov. Andy Beshear.

Republicans are meanwhile scrambling to retool a Trump campaign that was built to defeat Joe Biden into one capable of defeating a very different candidate.

Both parties want to know what happened to make it possible for a would-be assassin to shoot at Trump while he was on stage at a rally in Butler Pa. on July 13. Trump survived the attempt, but one of his supporters in the audience was killed.

This is a developing story…